Shrink Film


Reinforced bullseyes provide increased tensile strength for carrying heavy loads. Many companies use thick film and have attempted to reinforce bullseyes by layering ink, which adds significantly to the material cost of the pack. Polypack’s patent-pending Stronghold packs consist of shrink film that is folded over on the outside ends and wrapped around the products in an overwrap style machine. The end result is a double thickness of shrink film on the bullseyes, which strengthens the bullseyes for carrying the weight of the pack. This allows end users to downgauge the film thickness of the stock material while maintaining film thickness on the ends of the pack for handling. (US Patent Application No. 15450965)

STRONGHOLD™ case of water

Stronghold Pack Delivers Material Costs Savings of 29%

For example, a 24-pack of bottled water is usually wrapped in a 2.5 Mil thickness film. Comparison based on 5,000’ rolls at $1.40/lb. of film:

Stronghold™ 24-Pack film size = 26” Width X 38” Repeat
1.5 Mil film roll weight = 78 lbs.
Price per bundle = $.0692

Traditional 24-pack film size = 22” Width X 38” Repeat
2.5 Mil film roll weight = 110 lbs.
Price per bundle = $.0976

Provides for a stronger bullseye for carrying purposes

  • Film around the bullseye is twice as thick, which increases strength and load capacity
  • No need for thick film or “double bump” ink in order to achieve a stronger bullseye
  • Run thinner gauge film than competing machines (down to 1 mil!)
    Lower film cost per pack


Polypack is a proud member of PMMI. PPMI is the leading global resource for the packaging and processing industry. This organization represents more than 900 North American manufacturers and suppliers of equipment, components, and materials, as well as, providers of related equipment and services to the packaging and processing industry.


Polypack, Inc. produces unique end-of-line packaging equipment to a variety of businesses worldwide. Established in 1959, our company remains privately owned and operated from our corporate office in Florida.

3301 Gateway Centre Blvd.
Pinellas Park, FL 33782 USA
+1 (727) 578 - 5000